HBS 1.2.1 & 1.2.2 Muscle Review

Front

What type of muscle is found in the heart?

Back

Cardiac muscle.

Front

How is a Grade III muscle strain classified?

Back

A Grade III muscle strain is classified as a complete tear of the muscle or tendon.

Front

What determines the strength of a muscle movement?

Back

The strength of a muscle movement is determined by the number of muscle fibers engaged.

Front

What is the role of calcium ions in muscle contraction?

Back

Calcium ions trigger the binding of myosin to actin, which is essential for muscle contraction.

Front

What causes rigor mortis?

Back

Rigor mortis occurs because ATP is required to release the attached actin and myosin molecules.

Front

What are the three types of muscle tissue?

Back

The three types of muscle tissue are skeletal muscle, cardiac muscle, and smooth muscle.

Front

What is the primary function of skeletal muscle?

Back

The primary function of skeletal muscle is to facilitate voluntary movement of the body.

Front

How does smooth muscle differ from skeletal muscle?

Back

Smooth muscle is involuntary and not striated, while skeletal muscle is voluntary and striated.

Front

What is the sliding filament theory?

Back

The sliding filament theory explains how muscles contract by the sliding of actin and myosin filaments over each other.

Front

What is the role of ATP in muscle contraction?

Back

ATP provides the energy required for muscle contraction and for the detachment of myosin from actin.

Tags

NGSS.HS-LS1-7